When Ben Affleck hits the stage on "Saturday Night Live" this week, it will mark the fifth time the actor/director has hosted the show. And it will gain him entry into an exclusive club of "SNL" five-timers. The club was first mentioned by Tom Hanks during his fifth hosting gig in 1990 and was the subject of a sketch with other five-timers; the sketch was revived when Justin Timberlake hosted for the fifth time earlier this season. Who else is part of the club?